A population of mice shifting from light-colored coats to darker coats is displaying the effects of ____ selection.

Question

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The shift from light-colored to darker coats suggests that there is a selective advantage to having a darker coat in the mice's environment. This is an example of directional selection, as a particular trait (darker coat color) is being favored over another trait (lighter coat color).

A Population of Mice Shifting from Light-Colored Coats to Darker